Si fcc ThreeBodyCluster_BH_BiswasHamann_1987_Si__MO_019616213550_000 4.07505889237 Warning: Maximum number of function evaluations has been exceeded. C11 = 371.878813 +/- 0.007336 GPa C12 = 337.514721 +/- 0.005187 GPa C44 = 19.387509 +/- 0.001834 GPa B = 348.969419 +/- 0.004235 GPa